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Kernel: Fix the return type for syscalls

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The Process::Handler type has KResultOr<FlatPtr> as its return type.
Using a different return type with an equally-sized template parameter
sort of works but breaks once that condition is no longer true, e.g.
for KResultOr<int> on x86_64.

Ideally the syscall handlers would also take FlatPtrs as their args
so we can get rid of the reinterpret_cast for the function pointer
but I didn't quite feel like cleaning that up as well.
This commit is contained in:
Gunnar Beutner 2021-06-28 20:59:35 +02:00 • committed by Andreas Kling
parent b6435372cc
commit 2a78bf8596
71 changed files with 313 additions and 301 deletions
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6
Kernel/Syscalls/chdir.cpp
View file

@ -11,7 +11,7 @@
namespace Kernel {
KResultOr<int> Process::sys$chdir(Userspace<const char*> user_path, size_t path_length)
KResultOr<FlatPtr> Process::sys$chdir(Userspace<const char*> user_path, size_t path_length)
{
REQUIRE_PROMISE(rpath);
auto path = get_syscall_path_argument(user_path, path_length);
@ -24,7 +24,7 @@ KResultOr<int> Process::sys$chdir(Userspace<const char*> user_path, size_t path_
return 0;
}
KResultOr<int> Process::sys$fchdir(int fd)
KResultOr<FlatPtr> Process::sys$fchdir(int fd)
{
REQUIRE_PROMISE(stdio);
auto description = file_description(fd);
@ -41,7 +41,7 @@ KResultOr<int> Process::sys$fchdir(int fd)
return 0;
}
KResultOr<int> Process::sys$getcwd(Userspace<char*> buffer, size_t size)
KResultOr<FlatPtr> Process::sys$getcwd(Userspace<char*> buffer, size_t size)
{
REQUIRE_PROMISE(rpath);